Bioactivity of an experimental dental implant with anodized surface

• Autor(a) principal: Villaça-Carvalho, Maria Fernanda Lima [UNESP]
• Data de Publicação: 2021
• Outros Autores: de Araújo, Juliani Caroline Ribeiro [UNESP], Beraldo, Juliana Mariano [UNESP], Do Prado, Renata Falchete [UNESP], de Moraes, Mari Eli Leonelli [UNESP], Manhães Junior, Luiz Roberto Coutinho [UNESP], Codaro, Eduardo Norberto [UNESP], Acciari, Heloisa Andrea [UNESP], Machado, João Paulo Barros, Regone, Natal Nerímio [UNESP], Lobo, Anderson Oliveira, Marciano, Fernanda Roberta, de Vasconcellos, Luana Marotta Reis [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.3390/jfb12020039; http://hdl.handle.net/11449/229064
• topic: Anodizing; Microtomography; Nanotechnology; Osseointegration

Background: Several studies proved that anodic oxidation improves osseointegration. This study aimed to optimize osseointegration through anodization in dental implants, obtaining anatase phase and controlled nanotopography. Methods: The division of the groups with 60 titanium implants was: control (CG); sandblasted (SG); anodized (AG): anodized pulsed current (duty cycle 30%, 30 V, 0.2 A and 1000 Hz). Before surgery, surface characterization was performed using Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), X-ray Dispersive Energy Spectroscopy (EDS) and Raman Spectroscopy. For in vivo tests, 10 New Zealand white rabbits received an implant from each group. The sacrifice period was 2 and 6 weeks (n = 5) and the specimens were subjected to computed microtomography (µCT) and reverse torque test. Results: AFM and SEM demonstrated a particular nanotopography on the surface in AG; the anatase phase was proved by Raman spectroscopy. In the µCT and in the reverse torque test, the AG group presented better results than the other groups. Conclusion: The chemical composition and structure of the TiO2 film were positively affected by the anodizing technique, intensifying the biological characteristics in osseointegration.